Home / 104,721.66-144,518.85-56,978.10

Finding the Fourth Proportional to 104,721.66, 144,518.85 and 56,978.10

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Solution

The fourth proportional to 104,721.66, 144,518.85 and 56,978.10 is: 78,631.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,721.66 : 144,518.85 = 56,978.10 : x
  2. Step 2: Convert to fraction form
    104,721.66/144,518.85 = 56,978.10/x
  3. Step 3: Cross multiply
    104,721.66x = 144,518.85 × 56,978.10
  4. Step 4: Simplify right side
    104,721.66x = 8,234,409,487.19
  5. Step 5: Solve for x
    x = 8,234,409,487.19/104,721.66
  6. Step 6: Final answer
    x = 78,631.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.